EP 1023487 A1 20000802 - PROCESS AND DEVICE FOR TREATING WASTE PAPER WITHOUT BIOCIDES, CHLORINE COMPOUNDS, HYDROGEN PEROXIDE AND PERACETIC ACID, RECYCLED TISSUE PAPER WITH A TOTAL GERM NUMBER OF LESS THAN 1000 KBE/G AND A SURFACE GERM NUMBER OF LESS THAN 20 KBE/DM?2
Title (en)
PROCESS AND DEVICE FOR TREATING WASTE PAPER WITHOUT BIOCIDES, CHLORINE COMPOUNDS, HYDROGEN PEROXIDE AND PERACETIC ACID, RECYCLED TISSUE PAPER WITH A TOTAL GERM NUMBER OF LESS THAN 1000 KBE/G AND A SURFACE GERM NUMBER OF LESS THAN 20 KBE/DM?2
Title (de)
VERFAHREN ZUR AUFBEREITUNG VON ALTPAPIER UNTER VERMEIDUNG VON BIOZIDEN UND CHLORVERBINDUNGEN, SOWIE VON WASSERSTOFFPEROXID UND PERESSIGSÄURE, EINRICHTUNG ZUR AUSFÜHRUNG DIESES VERFAHRENS SOWIE RECYCLING TISSUEPAPIERE MIT EINER GESAMTKEIMZAHL KLEINER 1000 KBE/G UND EINER OBERFLÄCHENKEIMZAHL KLEINER 2
Title (fr)
PROCEDE ET INSTALLATION POUR RETRAITER DES VIEUX PAPIERS SANS BIOCIDES, SANS COMPOSES CHLORES, SANS PEROXYDE D'HYDROGENE ET SANS ACIDE PERACETIQUE, ET RECYCLAGE DE PAPIER DE SOIE D'UNE TENEUR TOTALE EN GERME INFERIEURE A 1000 KBE/g ET D'UNE TENEUR EN GERME SUPERFICIELLE INFERIEURE A 20 KBE/dm?2
Publication
Application
Priority
- DE 19742729 A 19970926
- EP 9805345 W 19980821
Abstract (en)
[origin: US6391150B1] The disclosure relates to a process for the treatment of old paper without the use of biocides and chlorine compounds as well as with the virtual avoidance of hydrogen peroxide and/or peracetic acid with a total germ count of less than 1000 CFU/g and/or a surface germ count of less than 20 CFU/dm2, comprising the following process steps: a treatment of the pre-sorted, optionally pre-shredded, old-paper starting material in an environment containing water in order to activate the microorganism spores, a germination of the spores, a further processing of the old-paper starting material containing germinated spores, preferably in at least one separation stage in a generally known manner at temperatures above room temperature (20° C. to 70° C. [68° F. to 158° F.]), optionally comprising pre-sorting, flotation, fine-sorting, washing and deckering, while returning the separated and de-pulped clear water, all the way to the dissolving stage, followed by hot dispersion of the further processed paper starting material in a water vapor atmosphere at atmospheric overpressure, temperature-controlled treatment and processing in a generally known manner into a largely spore-free recycled pulp, from that into a largely spore-free recycled base tissue and from that into a tissue product suited for final consumption; it also relates to the recycled base tissue or tissue product thus obtained and to a device for the execution of the process.
IPC 1-7
IPC 8 full level
CPC (source: EP US)
D21B 1/32 (2013.01 - EP US); D21C 5/02 (2013.01 - EP US); Y02W 30/64 (2015.05 - EP US)
Designated contracting state (EPC)
AT DE FR GB GR IT SE
DOCDB simple family (publication)
US 6391150 B1 20020521; AT E233342 T1 20030315; AU 9533298 A 19990423; DE 19742729 A1 19990401; DE 19881417 D2 20010510; DE 59807332 D1 20030403; EP 1023487 A1 20000802; EP 1023487 B1 20030226; WO 9916959 A1 19990408
DOCDB simple family (application)
US 48681200 A 20000302; AT 98948858 T 19980821; AU 9533298 A 19980821; DE 19742729 A 19970926; DE 19881417 T 19980821; DE 59807332 T 19980821; EP 9805345 W 19980821; EP 98948858 A 19980821